Apparently Shirley Anthony is no longer the parents coordinator and a new person has taken over the job. Maybe they are slow getting up to speed. If you have a current mid, they have the calendar and can email it to you.

Thank you for helping me find some calendar. Can't ask the Mid~out at sea, minimum email, and last thing on his mind For those wondering too; I did find the 2011-2012 Academic Calendar that helped a bit. It is under Academics, click Academic Calendar on the left, then look on top, in RED.
Reason for wanting to see the dates? It appears the Mids DO NOT get off on a Friday for the Christmas Break. It looks like the 20th of December but this is subject to change. Now to faint over the air fares...

I found both 2011-2012 and 2012-2013 at the link dblomomkp2013 posted. Looks like 2013 commencement is on 17 June 2013 - may be a bit premature (NOT given my office), but I already put the boss on notice that I won't be available from the 14th to the 18th in 2013.